BIOL 1020 Lecture Notes - Charophyta, Peroxisome, Sporopollenin
Document Summary
Terrestrial ancestor, even though some are now aquatic. Land plants do not include photosynthetic protists (algae) Plants supply oxygen and are the ultimate source of most food eaten by land animals. Non-charophyte algae have linear sets of cellulose- synthesizing protein: peroxisome enzymes. Specialized enzymes in the peroxisome organelles that reduce the negative effects of photorespiration (e. g. , loss of organic products: structure of flagellated sperm. Not all plants have flagellated sperm, but those that do have sperm that resemble charophytes (mosses have flagellated sperm those who diverged earliest from the species seems to have flagellated sperm: phragmoplast. Group of microtubules between daughter nuclei of a dividing cell. Land plants and some chrophytes only: charophytes the closest relatives of land plants: Structural support (more prone to falling down), original plants were very small, evolution of wood was important for structure. Sporopollenin protein: charophytes: prevents exposed zygotes from drying out, found plant spore walls.
